David r



(No Model.) 2 Sheets-Sheet 1. D. R. BOWEN.

WITNESSES (No Model.) 2 Sheets-Sheet 2.

D. R. BOWEN. CANE MILL. No. 457,395. Patented Aug. 11, 1891.

(gm/MSW m m: mm! runs 420., mow-Lima, wnmnumu, n. c.

' upper roller in use.

UNITED STATES PATENT OFFICE;

DAVID R. BOlVEN,-OF ANSONIA, CONNECTICUT, 'ASSIGNOR TO THE FARRELFOUNDRY AND MACHINE COMPANY, OF SAME PLACE.

CANE-MILL.

, SPECIFICATION forming part of Letters Patent No. 457,395, dated August11, 1891.

Application filed March 25, 1891. Serial No. 386,295. (No model.)

To all whom it may concern:

. Be it known that I, DAVID R. BOWEN, a citizen of the United States,residing at A11- sonia, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements inCane-Mills; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention is applicable to two-roller mills, and has for its objectto provide simple, strong, and durable means for raising the It will beunderstood by those familiar with this class of machinery that owing tothe enormous weight of the rollers there is great wear upon the lowerjournal-boxes of the upper roller and a constant tendency of the upperroller to settle down upon the lower roller, so that the weight of theupper roller, instead of resting wholly upon its journal-boxes, restspartially and sometimes entirely upon the lower roller. This isseriously objectionable on account of the great friction and wear uponthe rollers and the increased danger of clogging. In order to overcomethese objections I-have devised the novel construction which I will nowdescribe, referring by numerals to the accompanying drawings, formingpart of this specification, in which- Figure 1 is a side elevation of atwo-roller cane-mill embodying my improved construction, the centralportion of the rollers being broken away; Fig. 2, an end elevation, of acane-mill embodying my improved construction, and Fig. 3 is a detailsectional view illustrating the construction and operation of thewedges.

According to my invention the upper roller operates by its weight tocrush material fed beneath it, and is held out of contact with the lowerroll or rolls by adjustable wedges or inclined planes. None of thecrushing strain, therefore, falls upon the roll-adjusting devices; butis sustained by the rigid and strong bearings of the lower roll. The adjusting devices merely support the weight of the upper roll. They arealso above the plane of meeting of the rolls and not liable to beclogged or fouled by the expressed juices.

1 denotes the bed of the machine, which is provided atits ends withastandard 2, having recesses to receive the boxes 3 of the lower roller1.

5 denotes the cheek-pieces which are provided at their upper ends withrecesses to receive the upper and lower journal-boxes of the upperroller 6, said journal-boxes being denoted respectively by 7 and 8.

9 denotes cap-plates which rest upon the cheek-pieces and hold thejournal-boxes 7 and 8 in position. The cap-plates are secured in placeby heavy bolts 10, which extend down through the cap-plates,cheek-pieces, and the standards, as clearly shown in Fig. 2.

The novel feature of my invention consists in forming inclines 11 uponthe under sides of journal-boxes 8 and providing wedges 12, the undersides of which are preferably made parallel with the plane of themachine and reston surfaces 13 formed upon the cheekpieces, the uppersides of the wedges being inclines corresponding with inclines 11. Bothends of the wedges lie in recesses 14 in the opposite sides of thecheek-pieces, (see dotted lines Fig. 2,) the recesses in the fronts ofthe cheek-pieces extending through to the outer side and beingsurrounded by bosses 15 cast on the cheek-pieces. The wedges are coredout to form central openings 16, and are forced inward to raise theboxes of the upper roller by means of screws 17,the threads of whichengage corresponding threads at the rear ends of the wedges. The outerrecesses 14 are closed by heavy plates 18, bolted rigidly to thecheek-pieces. The shanksof the screws pass through these plates and areheld against endwise motion by heavy collars 19, rigidly secured to theshanks, the outer collars being provided with angular heads 20, throughwhich power is applied in any suitable manner to rotate the screws tomove the wedges.

Having thus described my invention, I claim In a cane-mill, thecombination, with the lower roll, of the upper roll operating by itsweight to crush material against the former,

a supporting-frame having stationary bean lugs for the lower roll,horizontal recesses 14, and vertical recesses open at the top, movmeansfor securing said plates to the frame, substantially as set forth.

In testimony whereof I affix my signature in able bearings S, engagingthe edges of the presence of two witnesses. latter recesses, cap-plates9, wedges 12, situated in the recesses 14, screws 17 engaging saidrecesses and having collars 19, removable plates 18, situated betweensaid collars, and

DAVID R. BOWEN. \Vitnesses: a CHARLES E. PIoKETT, Row. L. MUNGEPL v

